721323027 has 6 divisors (see below), whose sum is σ = 1041911052. Its totient is φ = 480882012.

The previous prime is 721323023. The next prime is 721323121. The reversal of 721323027 is 720323127.

It is a happy number.

721323027 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 721323027 - 2² = 721323023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (721323023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40073493 + ... + 40073510.

It is an arithmetic number, because the mean of its divisors is an integer number (173651842).

Almost surely, 2^721323027 is an apocalyptic number.

721323027 is a deficient number, since it is larger than the sum of its proper divisors (320588025).

721323027 is a wasteful number, since it uses less digits than its factorization.

721323027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80147009 (or 80147006 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 721323027 is about 26857.4575676850. The cubic root of 721323027 is about 896.8295966801.

The spelling of 721323027 in words is "seven hundred twenty-one million, three hundred twenty-three thousand, twenty-seven".